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1988•Symposium - International Astronomical UnionOpen access

Beryllium Abundances of F Dwarfs

K.G. Budge, Ann Merchant Boesgaard, J. R. Varsik

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Abstract

We have obtained spectra near 3130 Å of 23 F and G main-sequence stars at 0.05 Å px−1. We have made preliminary estimates of the equivalent widths for the Be II doublet at 3130.4 and 3131.1 Å by means of a comparison procedure that matches each star against a standard star of similar spectral type with known Be abundance. It appears that stars that are deficient in Be are very uncommon. The halo dwarf, HD 76932, clearly has Be.

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We have obtained spectra near 3130 Å of 23 F and G main-sequence stars at 0.05 Å px−1. We have made preliminary estimates of the equivalent widths for the Be II doublet at 3130.4 and 3131.1 Å by means of a comparison procedure that matches each star against a standard star of similar spectral type with known Be abundance. It appears that stars that are deficient in Be are very uncommon. The halo dwarf, HD 76932, clearly has Be.

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Available abstract

We have obtained spectra near 3130 Å of 23 F and G main-sequence stars at 0.05 Å px−1. We have made preliminary estimates of the equivalent widths for the Be II doublet at 3130.4 and 3131.1 Å by means of a comparison procedure that matches each star against a standard star of similar spectral type with known Be abundance. It appears that stars that are deficient in Be are very uncommon. The halo dwarf, HD 76932, clearly has Be.

Key concepts: Physics, Beryllium, Astrophysics, Stars, Spectral line, Stellar classification, Halo, Abundance (ecology)

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